<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html lang="en">
<head>
	<meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
	<title>js</title>
	<script type="text/javascript"></script>
	<script type="text/javascript" src="./js/main.js"></script><!-- 引入式 -->
	<script type="text/javascript">alert("99999")</script><!-- 行内 -->
	<script type="text/javascript">url ="http://www.baidu.com"</script><!-- 嵌入式 -->
	<style type="text/css" p{width: 50px;height: 50px;background: red url() 0 0 no-repeat;}></style>
</head>
<body>
	<div class="box"></div>
	<div class="box" onclick="alert("99999")"> </div>
	<input type="submit" value="点击" onclick="alert("99999")">
</body>
</html>